Having already tested electrostimulation device, I took a real pleasure to use this one. The machine is of good quality both in the electrodes on the control itself. Comes with a belt clip allows it to move a little without being cluttered. It is undeniable that this is a complement physiotherapy sessions. The camera itself is comprehensive, very complete, I would say a little too full. The programs are very numerous, varied, you really take the time to read the user manual. I have not tried all they are so many programs, but the ones I've tried, As for massage, muscle strengthening, or pain relief, by far quite effective, I appreciate having a versatile device that can be massaged gently, or treat (and my neck is appreciated) or strengthen differ with comprehensive programs. The only downside is that the programs are sometimes very long time. Do not start when you have to depart shortly ... I recommend it despite the complexity of programming.